Unearthing a major recruitment scam in the Indian Military Academy here, the CBI has booked three serving Lieutenant Colonels in connection with the case.

Lieutenant Colonels Akhilesh Mishra, Jagdish Bishnoi and Ambarish Tiwari have been accused of issuing fake experience certificates to candidates in recruitment to group C and D cadres of the prestigious institute in 2011-2012, CBI sources said here today.

A regular case was filed by the apex investigating agency against the trio earlier this week, they said.

The accused, charged with forgery, conspiracy and issuing fake certificates to candidates, are likely to be interrogated soon, they said, adding some arrests in connection with the case may also be made.

The accused officers had allegedly issued forged documents to pave the way for recruitment of 34 candidates and helped in replacing the original answer sheets of 16 others to help them clear the written test, they said.